Car-brake



UNITED STATES ATENT Carlos.

ISAAC ROSS MCCORMICK, OF LOGANSPORT, INDIANA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 488,695, dated December2'7, 1892.

Application filed November 30, 1891. Serial No, 413,627. (No model.)

To aZZ whom it-may concern:

Be it known that I, ISAAC Ross MCCORMICK, of Logansport, in the countyof Cass and State of Indiana, have invented certain new and usefulImprovements in Beamless Car- Brakes; andI do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters of referencemarked thereon.

The object of my invention is to dispense with brake beam now in use,and otherwise to simplify and reduce the amount of material used in theconstruction of same.

Figure 1 of the drawings is a representation of a bottom view ofcar-truck showing my device as applied to both trucks and the connectionto brake staff as used for hand brake. Fig. 2 is a representation ofsame device applied as a single brake or ,on but one truck of car. Fig.3 is a representation of brakes disconnected from trucks showingconstruction of same. Fig. 4. is a representation of hanger constructedin such a manner that the extended arm (V) at bottom acts as a guard tohold the brakes in position. Fig. 5 is a representation of air brakeconnection.

In Fig. l (B B) are levers bent in such a shape so as to form a heel atthe fulcrum at which place it is attached direct to the brake head orshoe the short arm extending outward coupling between the jaws ofspreading bars (C C) by means of key bolts. The ends of spreading bars(C C) extend to and are coupled to opposite brake head (D) as shown at(R) in Fig 3. The long arm of levers-(B. B.) are curved so as to connectwith rods (E. E), rods (E. E.) being attached at each end of equalizer(F) which is attached at its center with connecting rods (G), whichcontains pulleys (H. H). Chain (1) is secured to end of jaw whichextends past pulley (H) passes around pulley (H thence back and around(H) and connects with rod (J) and levers (0.) as shown in Fig. 5. Rods(J) extend to chain (K.) which is secured to brake staff (L.). Thereforeby turning the brake wheel or applying the air, draws the connectingrods (G G) together the same being connected at the centers ofequalizers (F. F.) thus dividing the powers equally between the fourlevers (B. B. B. B.) drawing them inward forcing the brake shoes (D. D.)against the wheels.

Fig. 2. is the same as onehalf of Fig. 1 except that rod G.) extends tothe opposite end of car and is connected to brake staff (L) by chain (K)the same as rod (J) in Fig. 1.

In Fig. 3 (B) is alever bent in such ashape as to form a heel at thefulcrum with hole for receiving key bolt when attached to brake head orshoe (D.) the short arm extending to and coupling between jaws ofspreading bar (C) which is attached at other end to opposite brake head(D) as shown at (R). Spreading bar (C) is provided with a roundflattened head slightly curved or bent to prevent binding in the jaws;the other end is provided with threads which screw into end of the forkby which it can be adjusted to any desired length. The jaws of fork areprovided with numerous holes by which the levers (B) can be placed atdifferent angles with the spreading bar (C).

In Fig. 4 guard arm (V) extends in side of the wheel to prevent thebrake shoes or head (D) from slipping outward, olf of wheel as shown inFig. 1. There is also a square hole in brake head (D) as shown in Fig. 3to receive the guard pin in case the one on the hanger should break orwhere the brakes are used on old style hangers.

In Fig. 5 lever is coupled at its fulcrum to the pistonrod of aircylinder its short arm being connected with end of support (Z) and itslong arm with chain (I) and rod (J). (W.) shows position of releasingspring.

What I do claim as my invention and desire to secure by Letters Patentis 1. The levers B. B. placed as described in combination with spreadingbar (C) and brake heads (D) all constructed and operated substantiallyas set forth.

2. The equalizer (F) in combination with rods (G. G.) and pulleys, (H.H) and chain (1 and connected with levers (B. B.) by rods (E. E.) as andfor the purpose substantially as set forth.

3. The hanger (S) provided with guard arm (V) as shown and substantiallyas described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

ISAAC ROSS MCCORMICK.

Witnesses:

J OHN H. PATRICK, FRANCIS M. HAMAN.

